Abstract: The explosion-proof performance of explosion-proof electronic devices is achieved by explosion-proof enclosure. In this paper, the sparks reasons of explosion-proof enclosure are analyzed. On this basis, the protection and maintenance measures of explosion-proof enclosure sparks are studied. Combined with the explosion-proof enclosure production situation, some specific examples are given about the protection and maintenance of explosion-proof enclosure sparks in the production process, which provides the reference experience for other mine-used explosion-proof enclosure manufacturer about the protection and maintenance of explosion-proof enclosure sparks.